Pipe-coupling.



No. 731,538. PATENTBD JUNE 23, 1903.

H'- W. BRADLEY & PEACE.

PIPE COUPLING.

APPLICATION FILED An. 21. 1902.

No MODEL.

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PATENT OFFICE,

HORACE IVALTER BRADLEY AND HERBERT PEACE, F THRYBERGH, NEAR l ROTI-IERHAM, ENGLAND.

PIPE-COUPLING.

SPECIFICATION forming part of Letters Patent No. 731,538, dated June 23, 190'3.` Application tiled April 21,1902. Serial No.103,958. (Nn model.)

To all, whom, t may concern:

Be it known that we, HORACE VALTER BRADLEY, mechanic, and HERBERT PEACE, carpenter and joiner, both subjects of the King of' Great Britain and Ireland, and both residing at Silverwood, Thrybergh, near Rotherham, in the county of' York, England, have invented certain new and useful Improvementsin Pipe-Couplings, of which the follow- 1o ing is a specification.

This invention relates to improvements in pipe-couplings, and'is especially applicable to 4 steam, air, gas, or Water mains formed of steel pipes or tubes and is adapted for ordinary or expanding joints.

The improved joint comprises a couplingboX formed with an internal ring or collar and fitted at each end with packing-glands. The jointed ends of the pipes are formed with :zo external flanges, one of which bears against the ring or collar, while between the two is placed a packing-ring of asbestos or indiarubber. A metal retaining ring or tube bears against the flange of the other tube or z5 pipe so as to grip the said flanges between it and the internal ring or collar, the packingring rendering the joint thus formed steam and water tight. The retaining ring or tube is fixed in position by means of set-screws,

3o and packing is placed between it and the gland at one end of the bok and between the internal ring or collar and the gland at the other end. For expanding joints the retaining ring or tube is formed with an internal 3 5 rim or projecting portion forming a stop for the end of the pipe engaging therewith,which end is curved outward or slightly fianged for this purpose, thus permitting the necessary sliding motion in either direction of the same.

4o Pipes of different diameters may also be coupled together` by forming a screw-thread on the outer end of one of the aforesaid coupling tubes or pipes and screwing thereto a metal coupling to which the pipe of reduced 4,5` diameter is screwed.

In order to clearly understand our invention, reference ishad to the accompanying sheet of drawings, in Which- Figure l is a vertical section of the coupling-box, showing two pipes in their fixed or coupled position. Fig. 2 is a modification of with the internal rim or projecting portion 2,

a similar view, vshowing an expanding coupling-joint; and Fig. 3 is a modification of one of the coupling-tubes as used for coupling pipes of different diameters'.

ais the coupling-box, and b the internal ring or collar formed therein.

c is the packing-gland fitted to one end of the box, and CZ the gland fitted to the other end, the saidglands being tightened up by 6o the bolts and nuts e. (Shown only in connection withthe gland d of Fig. l.)

fis one of the .pipes to be coupled, and g the other, and f g are the flanges respectively formed on the same. 7L is the asbestos 65 or india-rubber packing-ring placed between the said fianges.

1l is the retaining ring or tube, which bears at one end against the flange f and is formed at its other end with a recess i', running 7o around the same, and with which engage the set-screws 7c, fixed by the lock-nuts 7c', and bearing against the-lower partof the recess t", which is suitably curved to cause the said screws to jam the ring or tube t' against the 75 flangef', and thus secure a tight joint, the flange g of the pipe g bearing against the ring or collar l).

ZZ are the packing-spaces for the glands, and m is the bracket or flanges for securing 8o the coupling-box in position, either in a vertical or a horizontal position.

In the expanding joint-coupling (shown in Fig. 2) the retaining ring or tube 'L' is formed and the end of the pipefis turned over or flanged, as at f2, to prevent the uncoupling of said pipe, while at the same time permitting of lengthwise mot-ion for expansion and contracting. 9o

Fig. 3 shows the manner of coupling together pipes, one of which is of reduced diameter to the other, n being a coupling-tube corresponding to the tube g in Fig.` l, but cut short and formed with a screw-thread ln outside the packing gland and to which is screwed the coupling-piece o, the pipe p of reduced diameter beingitselfscrewed,as shown, to the said piece o.

By means of this invention the joints are rco prevented from blowing, and the glands can be repacked when the pipe is undereteam.

Having now fully described the nature of our said invention, whatwe claim, and desire to secure by Letters Patent, is-

1. The improved pipe-coupling comprising a coupling-box formed with an internal ring or collar,V a retaining ring or tube carried in said box and bearing against a flange on the vond of one of the pipes to be cou pled, a packformed with an internal ring or collar against which a flange on one of the pipes bears, a retaining ring or tube bearing against the other side of said flange, set-screws for hold ing the ring or tube in its clamping position, a flanged or turned-over end formed on the other pipe and engaging With a riin oreniargecl portion formed on the ring o1' tubo for permitting of the sliding motion of said pipe, and packing-glands at each end of the conpling-box, substantially as described.

In witness whereof We have hereunto set our hands in the presence of two witnesses.

HORACE VALTER BRADLEY'. HERBERT PEACE. Witnesses:

WALTER BAXTER, CHARLES CHANDLEY. 

